Weft-detecting mechanism



E. H. BYON. WEFT DETECTING IVIECHANISIW.

APPLICATION FILED Aue. I5, 1919.

Patented .1f Illy 69 2 SHEETS-SHEET l.

E. H. BYON.

WEFT DETEGTING MECHANISNI.

APPLICATION FILED AUVG.I5. 1919.

Patentd July 6, 1920..

2 SHEETS-SHEET 2.

UNITED STATES PAT ;.N

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interna .To all whom t may concer/1i: Be it known that l, Errfrll. Bron,avoit-i- Zenof the United States, residing at Wal tliam, in the countyof Middlesex and State of Massachusetts, have invented a new and usefullWeftDetecting Mechanism, of which the following is a specification;

This invention relates to a weft-detecting mechanism for automaticlooms, `more particularly designed for looms of this class in which`provision is made for replenisliing `the weft carrier before the weftthereon is `entirely exhausted.

lt is a general object of my invention to `provide means associated withthe transfer- "rer for giving the detector a detecting` movement duringthe" downward movement of thetransferrer. Preferably the detector ismounted on the transferrer and `is moved to detecting position on eachalternate beat of the lay.

`r i Another Object of my invention is to pro- `vide a pneumatic devicefor actuatingwthe detector, preferably adjustable aste the relv ativetime of operation. ln the form of my inventionshown .in the drawin maticdevice `is mounted on the transferrer g, the pneuand becomes operativeby engagement with an adjnstably fixed stop, thereby giving the detectora detecting movement at any de- `fsired point in the movement of thetransferrer.

` My invention further relates to arrange ments and combinations ofparts hereinafter described and more particularly pointed out in theappendedclaims. preferred `form ofmy invention is shownin the drawings,`

in whichf i Figure 1 is `a `fro-nt view of my improved detectingmechanism; i

Fig. 2 is a partial leftdiand side elevation of the transferrer lTig. 3is a plan view of a portion of the p "transferrer and the detectingmechanism tilinounted thereon;` i

lligd is a sectional front elevation taken alongthe line 4-4f in Fig; 2;

Fic; 5 is a left-hand side elevation `similar i to Fig. 2, but showingalso `the resetting fmechanism; V l Fig. G is a detail sectionalelevation taken ""along the line 6--6 in Fig. 3;

Fig". 7 is a detail front elevation ofthe re p `setting lever, and*Specification of Letters ]?atent.l

llmateiitetl duly il, 1222..

Application led August 15, 1919. Serial No. 317,221.`

Fig. S is a detail sectional view taken along the line 8--8 inlfig. 5.

Referring to the drawings, l have shown a portion of a stationary weftcarrier magazine framelO, having` a short shaft or stud `11 securedtherein upon which a transferrer 1in its left-hand position, the rodengages a .cam 14E-on an arm 15 (Figs. 7 and 8) and moves the armrearward. "lhe arm is mounted ona fixed pivot at 16 and supports asegment gear 17 which moves downward as the arm moves to the rear. Suchmovement of the gear 17 is operable through i connections not shown torelease a weft carrier for advance to the transfer point.

rlhe transferrer 12 is preferably given a downward ortransferringmovement on each alternate beat of the lay by a rod 18actuated `by connections not shown from any convenientfmoving' part ofthe loom.

'lfhe parts thus far` described are substantially the same as thoseshown in my prior `application .7a-273,671, filed January 28,

1919, prior 1918,

to which application and also to my application #244,637, filed July 12,reference is made for a more com- `pletedescription of the operationofthe p arts.

- The detector 2O in my present invention is pivoted at 21 to alever 22,whichiii turn is pivoted at 23 to the laterally proiectins' head 241- ofthe transferrer 12. A light coil s spring* 25 normally holds the lever22 and detector 2O in the `raised position shown in full lines inFig. 1. in adjustable stop 26 :on the lever 22 limits the movement ofthe detector in one direction.

An actuating); lever 27 (Fig. 4l) is pivoted at 29 to the transferrerhead 24, rfhe right end of the lever 27 rests upon. the

lever 22 upon which the detector is mounted.,

the lever also engagingthe flat upward extension 29 ofthe detector 20and pressing the extension 29 against the stop 26. The

` left-hand arm B0 ofthe lever 27 carries an 4the rod l13.

adjustable stud 31 .which rests upon a plunger 32 slidably mounted in acylindrical recess 33'in the head 24. The recess 33 is connected by apassage 34,7with 'a cylindrical recess 35 formed in an arm 36 projectingupwardly from' the transferrer12.Y A plunger 37 is slidably mounted inthe recess 35 yandis normally pressed outward bya coil V.each alternatebeat of the lay, the plunger `3.7 engages" the stop 39V and is forcedthereby into the cylinder 35, Vcompressing the spring 38` and alsotheair contained inthe cylinder. The plunger 32 in the recess 33 isnormally heldin its lower vor inner position by pressure Vtransmittedfrom the springf25. When `the plunger'37 is forced into the cylinderv35, however, a portion of the air compressed 'in the. cylinder 35l isforced into the passage 34, raises .the piston 32, and nieves the lever22 to lthe lposition shownin dotted lines in Fig. 1. Y l

- Ifa sufficient'supply of weftremains on ythe 'weftcarrien the teethVof the detector V20 vengage the weft, holding the detector in thepositions'hown in dotted lines in Fig. 4, in which -position thedetector can' not move If, however, the weft on'the 4weft-'carrier isvsubstantially exhausted, the 'lower end. of thedetector slides along theweft carrier to the position indicated in Vdottedglines" in Fig 1, theupper extension 29-ofthe detector acting as a lcam to move f `'the rod13 tothe left, as also indicated in the lower position of Fig. 1.

Aagainstthe 'arm' 15 has been previously described. 'As the transferrer'thereafter com- Tfhe subsequent roperation ofthe rod 13 pletes itsupward'stroke,tlie rod 13 engages ganfinclinedfportion'40 (Fig. 7*) Aonthe,V arm beftimed forany desired point in the stroke 'Y of thetransferrer and by the provision of E15 kand 4is returned 'therebyto'normal po- `Several advantages 'areobtained through vthe 'use 1offpneumatical'ly' rcontrolled operating mechanism. By the adjustment ofthe stop`39,itheoperation of the detector 20 may ajpliing'er 3'7"'ofv'sufficient size, almost instantaneous 'operation of the detector maybe secured; Y l

":Ihe detector 20, lever22 and actuating v liever: 27, should-preferablybe as light vas possible and are commonlyfmade o'f'alumi -n`um. A s

1. Having -lthus described my invention, it

will be evident that changes and modifica tions can be made tlieiein bythose skilled in the art within the scope of my inventionv as set forthin the claims, and I do not wish to be otherwise limited to the detailsherein disclosed, but what I claim is 1. In a loom, a transferrer, meansto give said transferrer a transferring movement at every alternate beatof the lay, a detector mounted on said transferrer, a member eil'ectiveto give said detector a detecting movement, and an actuating device forsaid member mounted on said transferrer, said device being renderedoperative by coperation with an additional element as the transfeirermoves downward.

' 2. In a loom, a weft detector, a transferrer, and a pneumatic deviceactuated by said transferrer to give said detector a detectinO movement.

3. Iii a loom, a transferrer, a weft dctector, and a pneumatic devicerendered effective to give said detector a detecting movement bydownward movement of said transferrer.

-. 4. In a loom, a transferrer, a weft detector, and a pneumatic devicemounted on and movableV with said transferrer and rendered effective togive said detector a detecting movement by downward movement of saidtransferrer.

5. In a loom, a transferrer, a lever pivoted thereon, a detectorsupported by said lever, a member effective to move said lever anddetector to operative position, and an actuating device for said membermounted on saidtransferrer, said device being rendered operative bycoperation with an additional elementas the transferrer moves downward.

6. In a loom, a transferrer, a weft detector mounted thereon, apneumatic device, and connections between said device and said detectorwhereby said device is effective to give said detector a detectingmovement as the transferrer moves downward.

7.Y In a loom, a transferrer, a weft detector mounted thereon, apneumatic device mounted on said transferrer, and connections betweensaid device and said detector whereby said device is effective to givesaid detector a detecting movement as the trans ferrer moves downward.

8. Ina loom, a transferrer, a lever pivoted thereon, a detectorsupported by said lever, an actuator for said lever,-and a pneumaticdevice mounted on said transferrer, rendered effective to in'ove saidactuator by downward movement with said transferrer.

9. In a. loom, a'transferrer, a lever pivoted thereon, a detectorsupported by said lever,

Y an actuator yfor said lever, and a pneumatic device to move saidactuator as said trans- A .ferrer movies downward.

10. In a loom, a trunsferrer, a lever pivoted thereon, a detectorsupported by said lever, an actuator `for said lever, pivoted on saidtranslerrer, a plunger engaging said actuator, and a pneumatic device tomovel 12. In a loom, a transferrer, means to give said transferrer atransferrin movement, a detector mounted thereon, said transferrerhaving two separate cylindrical recesses therein, and having also apassage connecting said recesses, a spring pressed plunger in one recesspositioned to engage a fixed stop as the transferrer moves dovvnvvard,said plunger being depressed thereby, and

`a plunger in the second recess connected to actuated the detector whenthe lirst plunger is depressed.

In testimony whereof I have hereunto aiixed my signature.

@PPA H. RYUN..

